is the Roach2 test machine bring up manual of any help?
https://docs.google.com/document/d/1tqw4C6uZ6EULl1OykTFL_vQTnK52UBr0aYqTg44E5wg/edit
this link is found at
https://casper.ssl.berkeley.edu/wiki/ROACH-2_Revision_2
On Sat, 12 Sep 2020, Matt Dexter wrote:
Date: Sat, 12 Sep 2020 15:26:16 -0700 (Pacific Daylight Time (Mexico))
From: Matt Dexter <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [casper] ROACH2 jtag booting
I don't know enough to help with loading uboot. Perhaps the
following bits of low level information on the Roach2 Rev2
might be of use.
In the Roach2 rev2 schematics U77 (page 26 of 27) drives the JTAG TCK
signals. There are 11 loads:
V6, CPLD, PPC, PPCNET, V6NET, QDR0, QDR1, QDR2, QDR3, VMON, CMON
The 4 QDR are the same devices so the JTAG IDCODE is probably the same.
The voltage and current monitor ICs are both MAX16071 and will have
matching IDCODEs.
The 2 network devices are both Marvel 88E1111 GbE transceivers
so will have matching IDCODES.
The series resistors to the right of U77 and U79 show the sequence
of the JTAG input/output bits.
PPC, V6, CPLD, QDR0, QDR1, QDR2, QDR3, PPCNET, V6NET, CMON, VMON
So my guess is
Device ID Code IR Length Part Name Guess from TDI/O
1 0440f1e1 0 PPC440EPX-NUA667T PPC
2 84288093 10 XC6VSX475T V6
3 16d4a093 8 XC2C256 CPLD
4 1a464069 0 CY7C2565KV18 QDR0
5 1a464069 0 CY7C2565KV18 QDR1
6 1a464069 0 CY7C2565KV18 QDR2
7 1a464069 0 CY7C2565KV18 QDR3
8 000003d3 0 88E1111 PPCNET
9 000003d3 0 88E1111 V6NET
10 18006197 0 MAX16071 CMON
11 18006197 0 MAX16071 VMON
I've only heard of the usbWiggler being used with the Roach1.
Matt
On Sat, 12 Sep 2020, Sebastian Antonio Jorquera Tapia wrote:
Date: Sat, 12 Sep 2020 14:08:54 -0700 (PDT)
From: Sebastian Antonio Jorquera Tapia <[email protected]>
Reply-To: [email protected]
To: "[email protected]" <[email protected]>
Subject: [casper] ROACH2 jtag booting
Hi Casperiters,
When I was playing trying to make a netbooting with the ROACH2 and I issue
the command: "run tftpuboot"
and making the story short I ended up with no uboot :(
Luckily I have access to one xilinx jtag so I was thinking in connecting
via xmd to the ppc and send
the uboot with the command dow.
The jtag found 10 devices where one is the Virtex, other one is the
Coolrunner and 8 unknown devices.
I think the ppc Is none of those unknown devices, because the IR length is
zero.
So now I have some doubts to how to proceed:
1) Looking at the roach2 diagram, the coolrunner is connected in certain
fashion with the ppc. Could I
load the uboot using as target the coolrunner?
2) Reading the roach1 bringup memo in the old wiki, it says that one way to
upload the uboot is to use
a Macraigor usbWiggler to set the ppc program counter in a specific
location in order to open a xmodem.
The roach2 works in the same way? Also, do I need that specific jtag or the
Xilinx one could do the
job?
https://casper.ssl.berkeley.edu/wiki/ROACH_Bringup#PowerPC_U-Boot_Configuration
Here are the possible targets that jtag found:
JTAG chain configuration
--------------------------------------------------
Device ID Code IR Length Part Name
1 0440f1e1 0 unknown
2 84288093 10 XC6VSX475T
3 16d4a093 8 XC2C256
4 1a464069 0 unknown
5 1a464069 0 unknown
6 1a464069 0 unknown
7 1a464069 0 unknown
8 000003d3 0 unknown
9 000003d3 0 unknown
10 18006197 0 unknown
11 18006197 0 unknown
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